jackson



(No Model.) I 3 Sheets-Sheet 2. B. JACKSON & G. W. BONDS.

HOISTING APPARATUS FOR WAGON DERRIGKS, 6w, N0..285,903. Patented Oct. 2,1883.

3 Sheets-Sheet 3.

(No Model.) 7

B. JACKSON & G. W. BONDS. HOISTING APPARATUS FOR WAGON DERRIGKS, 8w.

.Patented 0613.. 2, 1883.

N. PEYEas. Wield-Lithographer. Washinglon. n. c.

UNITED STATES PATENT BYRON .TAFKSON AND GEORGE V. BONDS, OF SANFRr-XNOISUO, (A LIFORNIA;

SAID BONDS ASSTGNOR TO SAID JACKSON.

HOISTING APPARATUS FOR WAGON-DERRICKS, 841.0.

SPECIFICATION forming part of Letters Patent No. 285,913, dated Getober2,1883. Application filed July 29, ISBZl. (.Yo model.)

To (all, whom it may concern.-

Be it known that we, ,f-YRON JACKSON and GEORGE XV. .3oNns, of the cityand county of San Francisco, and State of California, have invented anImproycment in Portable lfoisti ng Apparatus for \Vagon-Derricks andDerrick Forks; and we hereby declare the following to be a full, clear,and exact descri tion thereof.

Our invention relates to improvements in portable hoistin apparatus forwagon-derricks and der1 -ick-'forks; and it consists, first, in amechanism for raising and lowering the forks, and a more perfect meansfor o )erating the same, in a means for conveying the power to themechanism from. distant points and from various directions, and in ameans for keeping the belts in a proper state of tension, all of whichwill be more fully explained by refer once to the accompanying drawings,in which- Figure 11, Sheet, 1, is a rim of a thrashing machine,derrick-wagon, and fork, showing the relative position of the di tferentparts. Fig. 2, Sheet 2, is a plan view of the ropedrums and theirfrictionwheels. Fig. 8, Sheet 2, is horizontal section taken through theshafts of the f rictioirwheels. Fl 4. is a side view, showing thevertical pinion-shaft and driving-pulley. Fig. 5 is an enlargedperspective view of one of the frictioirwheels and the eccentric axleupon which they are mounted. Fig. (3, Sheet 3, is a perspective view ofthe ('lireetion pulleys. Fig. 7 is a view of the tightening devices.

Our present invention is based upon a (levice patented to V. WV. arlile,December 25, 1877, and the'tirst part relates to an improved means forthrowing the friction-wheels of the hoisting-drums into or out ofcontact with the friction-wheels upon the drivingshatt.

A A are the hoisting-drums, and B I; are two friction-wheels, one fixedat each end of each hoistingdrum, so as to give a greater amount ofpower than when but one wheel is employed for each drum. A shaft, 0,passes loosely through the drum and wheels, so that they may turn uponit, and the ends of this shaft have eccentric journals I) turned uponthem, as shown. These journals fit into sta tionary boxes 1 upon theframe, and levers F are connected with the shafts, so that they may beturned around. to any desired position in their boxes. The driving-shaft(i extends across the frame at one side, and has frictionwheels H,corresponding with the wheels B.

It will be evident that when the eccentric shaft of either of the drumsis turned in one direc tion it will carry the wheels B forward intocontact with the wheels H, so that they and the drums will. be caused torotate as long as contact is maintained, and the forks will thus belifted, and when by a reverse movement of the lever the eccentric shafthas been turned in an opposite direction the wheels B will be withdrawnfrom contact with the drivingwheels and the rotation of the drums willbe stopped. The forks may be held at any point,

when elevated, until it is desired to drop their load, by brakesoperated by footlevers and rnnning npon the pulley L.

In order to adjust the boxes 1+] of the drumshaft and the boxes 1*) ofthe shaft (i, so that the uressure of the trictioirwheels will be equalat each end, the boxes at each end are united by bolts 0., having nutsupon their ends, by which they may be drawn toward each other orrelaxed, as is found necessary. By this construction the wheels ll andIf at each end of the drum may be given the same amount of frictionalcontact when thrown together.

The shaft (i has a geanwhcel, 1, upon it, and'this is engaged by abevel-pinion, J, upon the top of the vertical shaft K, which has thehorizontal rope-pulley L secured to its. lower end at a point so lowthat the rope passing around it is close to the ground and out of theway of the other mechanism or parts of the wagon. By reason of itshorizontal position it will be seen that the driving rope or belt M canbe brought to it from any direction, and it will. not be necessary toset the wagon exactly with reference to the engine or other power, butonly so that the feeder-belts will be in the best position from thewagon to the thrasher, as shown in Fig. 1.

The engine being set with reference to the thrasher, so that the maindrivingbelt passes properly from one to the other, the two parts oft-herope M are carried around the cornerturn. idler-pulleys N and O, and areled thence to the driving-pulley upon the engine or driving shaft. ThesepulleysNand O are mounted loosely upon a vertical shaft, 1", having aplate,

Q, upon the lower end, which rests upon the ground. The pulleys are ashort distance apart, and the upper one is somewhat smaller than thelower one, so that if the rope sags between these pulleys and the driveror the pulley L the parts will not chafe each other, as they will not bein a vertical line. The shaft P is journaled in a light horizontalframe, It, which extends in the opposite direction from the angle madeby the rope M as it passes around the pulleys, and is fixed to a stakeor with the shaft of the pulley V, around which the rope passes by linksU. The rope passes around the vertical pulley V, and the lower partpasses up over the pulley S, and thence betweenthelinks UT, belowthepulley S, and to its destination, as shown in Fig. 7. The weight ofthe pulleys S S and the links T and -U resting upon the rope always keepup the proper tension and take up any slack that may occur fromstretching. \Vhen not in use, the rope being removed, they simply hangfrom the pulley-shaft and are out the way, but in a position to beimmediately swung up into place as soon as the machine is set and therope replaced upon the pulley V.

This deviceis used when the machinery is in line, so that the beltpasses directly to the pulley V, and the corner pulleys are not neeessary.

Having thus described our invention, what we claim as new, and desire tosecure by Let ters Patent, is'

1. In a hoisting apparatus, and in combinationwith a driving-shafthaving friction-wheels upon it, rope-drums 'A, having correspondingfriction-wheels fixed to them at both of their ends, and loosely mountedupon shafts having eccentric journals, and levers F, for rotatingsponding friction-wheels secured to the ropedrums, which turn looselyupon a shaft hav- 'ing eccentric journals, and a means by which saidshaft may be turned to throw the wheels into or out of contact, incombination with the boxes E and E of the drum-shaft and thedriving-shaft, and a means for adjusting said boxes with relation toeach other, substantially as herein described.

3. In a hoisting apparatus, arope-drum, A, having friction-wheelssecured to its ends and turning loosely upon a shaft with eccentric incombination with a shaft, G, having corresponding friction-wheels fixedto it, the vertical shaft K, and gear-wheels I J, and the horizontalrope-pulley L, substantially as and for the purpose herein described. 4.In a hoisting apparatus, and in combination with the ropedrums,friction-pulleys, with means for throwing them into or out of contact,gears I J, vertical shaft K, and horizontal pulley L, as shown, thedriving-rope M and the corner-turn pulleys-N and O, substantially asherein described.

5. The direction-pulleys .N O, of different diameters, supported andturning .upon the vertical shaft P, in combination with thehorilontally-moving ropes M, passing around said journals, and a meansfor turning said shaft,

pulleys out of a vertical line, substantially as herein described.

6. The vertical shaft P, with itsbase or support Q, and thedirecting-pulleys N' and O,

turning loosely 'upon it, in combination with the frame or arms R and ananchor therefor, whereby the pulleys are supported and their horizontalposition maintained, substantially as herein described.

7. The means for automatically taking up the slack andmaintaining thetension of the belt, consisting of the pulleys S S, having their shaftsj ournaled at the ends of links T, and the links U, loosely connectingsaid links with the shaft of the pulley V, in combination with a beltthe lower part of which passes beneath the pulley S, over the pulley S,and thence beneath the pulley V,substantially as herein described.

In witness whereof we have hereunto set our hands.

BYRON J AOKSON. GEO. IV. BONDS.

Witnesses:

C. D. COLE, J. H. BLooD.

